The best modem for Frontier DSL is the Actiontec 300 Mbps, a Frontier-compatible modem with rating of four out of five stars on Amazon.com. Other Frontier-compatible modems include the Upvel UR-354AN4G or Netgear N600 based on research and customer feedback provided by ApprovedModems.com as of 2015.
The Actiontec 300 Mbps provides dual modem and router capabilities, with a four-port switch. The modem is designed for DSL and uses auto-detect to determine service settings for Frontier Internet. The device also includes encryption, a firewall and parental controls.
The Upvel UR-354AN4G also combines modem and router technologies, with two antennas and WPA2 security for Frontier networks. The Netgear N600 offers dual-band connectivity along with the NETGEAR genie home network manager.